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mustry
 3 years ago
prov that sin3A=?
mustry
 3 years ago
prov that sin3A=?

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hba
 3 years ago
Best ResponseYou've already chosen the best response.1sin3A= something which we have to prove ?

ajprincess
 3 years ago
Best ResponseYou've already chosen the best response.2Prove sin3A=? sin3A=sin(A+2A) use sin(A+B)=sinAcosB+cosAsinB sin2A=2sinAcosA

mustry
 3 years ago
Best ResponseYou've already chosen the best response.0no ur suppose to expand it

mustry
 3 years ago
Best ResponseYou've already chosen the best response.0sin(2A+A)=sin2AcosA+cos2AsinA

ajprincess
 3 years ago
Best ResponseYou've already chosen the best response.2cos2A=cos^2Asin^2A =12sin^2A =2cos^2A1

mustry
 3 years ago
Best ResponseYou've already chosen the best response.0OKAY put it in the equestn
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